For the past week or so I have had very painful and tingling feet, tightening of my feet, calves, back of thighs, upper arms and hands that is not quite a full on cramp but more of a threat. The tightening happens after very little use of my hands and legs, but not all the time. I also feel like I have bands around my calves and ankles.

I am seronegative MG, taking 25 prednisone, 100 Imuran, 45 Mestinon 4xday, and since May have been on B-12 shots. I didn't have these pains and cramping prior to starting the shots except for a very occasional 1 day exacerbation, so I have my doubts whether it could be B-12 deficiency related. This has been continuous for the last week.

I'd sure appreciate any ideas on what this might be, if other MGers have experienced this, what you've figured out.

Thanks,
Susan